array.sort was broken since 2001 when the implementation was changed
from merge sort to SAM sort.
library/array.m:
Fix the confusion as to which output argument of samsort_up is
sorted.
Add optional runtime checks of the pre- and post-conditions
of samsort_up and samsort_down when built with a trace flag.
Add array.sort_fix_2014.
tests/hard_coded/Mmakefile:
tests/hard_coded/array_sort.exp:
tests/hard_coded/array_sort.m:
Add test program.
NEWS:
Announce the fix.
